OK I visited the store. The display phone, along with 2 of the employees' phones, fluctuate between grey and blue bars on 4G, more time on the grey. They told me it was normal, I said no, if its on grey, then its not connected to google. Hence no push Gmail, or Gtalk is not signed in, and showed it to them. They seem to have no solution to this.
Nokia 3560 (Cingular) > LG PM225 (Sprint) > Sanyo SCP-8500 (Sprint) > Nexus One (T-Mobile) > HTC Thunderbolt (Verizon) > Samsung Galaxy Nexus LTE (Verizon)
Asus Transformer TF101